`central-courses.net`

DNSSEC	🔒 Signed (DS record present)
A	213.186.33.24^{🇫🇷 OVH213.186.32.0/19 ISP Paris, France}
		PTR	`cluster013.ovh.net`
NS	`dns19.ovh.net` ⭐
		A	2001:41d0:d00:f800::2^{🇫🇷 OVH2001:41d0::/32 IPv6}
			PTR	`dns19.ovh.net`
		A	5.135.216.9^{🇫🇷 OVH5.135.0.0/16}
			PTR	`dns19.ovh.net`
NS	`ns19.ovh.net`
		A	2001:41d0:b00:f200::2^{🇫🇷 OVH2001:41d0::/32 IPv6}
			PTR	`ns19.ovh.net`
		A	5.135.36.129^{🇧🇪 OVH5.135.0.0/16}
			PTR	`ns19.ovh.net`
MX	`mx4.mail.ovh.net` ⭐
		A	178.32.124.207^{🇫🇷 OVH178.32.0.0/15 ISP Paris, France}
			PTR	`mx4.mail.ovh.net`
MX	`mx3.mail.ovh.net`⁽¹⁰⁾
		A	91.121.53.175^{🇫🇷 OVH91.121.0.0/16 ISP Paris, France}
			PTR	`mx3.mail.ovh.net`
TXT	`1\|www.central-courses.net`
TXT	`v=spf1 include:mx.ovh.com ~all`
SOA	`dns19.ovh.net`tech@ovh.net 2026-02-16 #0

`net`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1771291465

DNS History

9 records (5 active, 4 former)

●NSdns19.ovh.net2019-12-27 → 2026-03-09 · 3 obs

○ 2017-01-03 19:16:26
● 2019-12-27 20:17:26
● 2026-03-09 08:42:00

●NSns19.ovh.net2019-12-27 → 2026-03-09 · 3 obs

○ 2017-01-03 19:16:26
● 2019-12-27 20:17:26
● 2026-03-09 08:42:00

○NSns43.domaincontrol.com2017-01-03 → 2017-01-03 · 3 obs

● 2017-01-03 19:16:26
○ 2019-12-27 20:17:26
○ 2026-03-09 08:42:00

○NSns44.domaincontrol.com2017-01-03 → 2017-01-03 · 3 obs

● 2017-01-03 19:16:26
○ 2019-12-27 20:17:26
○ 2026-03-09 08:42:00

●MXmx3.mail.ovh.net2026-03-09 → 2026-03-09 · 2 obs

○ 2019-12-27 20:17:26
● 2026-03-09 08:42:00

●MXmx4.mail.ovh.net2026-03-09 → 2026-03-09 · 2 obs

○ 2019-12-27 20:17:26
● 2026-03-09 08:42:00

○MXredirect.ovh.net2019-12-27 → 2019-12-27 · 2 obs

● 2019-12-27 20:17:26
○ 2026-03-09 08:42:00

○A195.154.171.32017-01-03 → 2017-01-03 · 3 obs

● 2017-01-03 19:16:26
○ 2019-12-27 20:17:26
○ 2026-03-09 08:42:00

●A213.186.33.242019-12-27 → 2026-03-09 · 3 obs

○ 2017-01-03 19:16:26
● 2019-12-27 20:17:26
● 2026-03-09 08:42:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
central-courses.net	dns19.ovh.net, ns19.ovh.net	4 records

✅ Authoritative Response

Server: 5.135.216.9

NS records: dns19.ovh.net, ns19.ovh.net

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 380ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`213.186.33.24`
NS	2	`ns19.ovh.net, dns19.ovh.net`
MX	2	`mx3.mail.ovh.net (pri: 10), mx4.mail.ovh.net (pri: 1)`
TXT	2	`1\|www.central-courses.net, v=spf1 include:mx.ovh.com ~all`
SOA	1	`dns19.ovh.net tech.ovh.net`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (dns19.ovh.net, dns19.ovh.net, ns19.ovh.net...)

Analysis

IP Addresses

central-courses.net maps to IP address 213.186.33.24.

Other host names, for instance dif-chimie.fr, iperaba.com, saint-francois-forez.fr, headon-photography.be and asdp.fr share IP numbers with central-courses.net.

Name Servers

Two name servers dns19.ovh.net and ns19.ovh.net are delegated to central-courses.net.

central-courses.net uses the same name server configuration as other domains, such as philippetexeire.fr, saczip.ch, ultrans.org, ph2m.fr and fashionpolice.fr.

Host names with two IPs:

dns19.ovh.net points to 2001:41d0:d00:f800::2 and 5.135.216.9.

ns19.ovh.net points to 2001:41d0:b00:f200::2 and 5.135.36.129.

Mail Servers

Two mail servers handle central-courses.net: mx3.mail.ovh.net and mx4.mail.ovh.net.

central-courses.net shares the same mail server setup as other domains, including dunstetter.fr, eoliennes-en-mer-oleron.com, odkryjzekrakow.pl, www.pow.com.pl and verniani.tv.

central-courses.net shares mail servers with other domains at least in part, for instance doomuniverse.com, hypnose-bordeaux.net, pmrconsulting.com, troisdeclic.fr and bluesaphir.com.

these mail servers are often used together with mx2.mail.ovh.net, mx1.mail.ovh.net and mx0.mail.ovh.net.

Host names with a single IP address:

mx3.mail.ovh.net points to 91.121.53.175

mx4.mail.ovh.net points to 178.32.124.207

central-courses.net - robtex.com